January
Conditions depend more on region, weather or access.
YOUR YEAR BENEATH THE SURFACE
Portugal.
Summer generally favours mainland and Azores trips. Madeira offers year-round diving; offshore big-animal trips depend on weather and boat schedules.
Best-season months: June, July, August, September
SEE THE WHOLE PICTURE
A month-by-month guide
February
Conditions depend more on region, weather or access.
March
Conditions depend more on region, weather or access.
April
A good option, with local differences to consider.
May
A good option, with local differences to consider.
June
Generally the most favourable seasonal window.
July
Generally the most favourable seasonal window.
August
Generally the most favourable seasonal window.
September
Generally the most favourable seasonal window.
October
A good option, with local differences to consider.
November
A good option, with local differences to consider.
December
Conditions depend more on region, weather or access.
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